Headband



FIG. 1 is a front elevational view of a headband showing my new design, in an extended position;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view of the headband in an arched position;

FIG. 4 is a side elevational view; and,

FIG. 5 is a front perspective view thereof. 

The ornamental design for a headband, as shown and described. 